Tom Sawyer
In 2000, Don Knotts did some more voice acting work for the animated direct-to-video fim Tom Sawyer, where Knotts voiced the charater of Mutt Potter. The film has a cast of animals instead of humans in an adaptation of Mark Twain’s The Adventures of Tom Sawyer.
Most of the character’s voices are done by country music singers and featured many musical numbers.
Air Buddies
The straight-to-DVD comedy Air Buddies was released in 2006. It was the sixth film in the Air Bud seriers and the first one to be in the direct-to-DVD spin-off series. The film is about the life of a lonely teenagers and his dog who are fantastic at every sport.
This was actually Don Knotts’ final film and was released posthumously. In the film, Don Knotts does the voice of “Sniffer”, an old Bloodhound who no longer has his sense of smell.